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Finding the Fourth Proportional to 79,378.56, 119,000.88 and 65,339.28

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Solution

The fourth proportional to 79,378.56, 119,000.88 and 65,339.28 is: 97,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,378.56 : 119,000.88 = 65,339.28 : x
  2. Step 2: Convert to fraction form
    79,378.56/119,000.88 = 65,339.28/x
  3. Step 3: Cross multiply
    79,378.56x = 119,000.88 × 65,339.28
  4. Step 4: Simplify right side
    79,378.56x = 7,775,431,818.57
  5. Step 5: Solve for x
    x = 7,775,431,818.57/79,378.56
  6. Step 6: Final answer
    x = 97,953.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.